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Special Forums UNIX and Linux Applications Apache+Perl: interruption of STDIN Post 302361373 by sevmax on Tuesday 13th of October 2009 04:42:39 AM
Old 10-13-2009
Question Apache+Perl: interruption of STDIN

Hello dear community!
I have faced with a trouble which I trying to solve for a long time.

I have service of video streaming. And I have web and video roles for servers.
Video servers upload video using SWFUpload and then stream it.
Issue became during uploading of video.
In random time users receive "I/O error", and I have record in database about this failure.
Also I am unable to repeat this error because don't know reasons.

Below are details of system:
CentOS 5 x86_64
Apache
Arch : x86_64
Version: 2.2.3
Release: 11.el5_2.centos.4

Perl
Arch : i386
Version: 5.8.8
Release: 15.el5_2.1

Below is answer I've receive on the same question from SWFUpload forum:
Quote:
There are a few common causes for IO errors. Unfortunately the Flash Player doesn't give any details.

The only way I can think of to log the details is to handle the uploadError event and send the "message" parameter to the server as an ajax request.

Whatever is shown in the message parameter is all the information that Flash gives us.

Most often IO errors are seen:
1. The POST (file size + other post paramters) exceeds the max allowed by the server.
2. The server script execution time exceeds the timeout limit
3. mod_security rejects the upload (because the Flash Player uses a valid but suspicious format for the upload)
4. An error in the page terminates the connection without a response
5. Some other timeout.
6. Anti-virus software.
I don't have #3 mod_security and #6 Anti-virus software on servers.

Is there any way to set timeouts for perl like for php in php.ini?

For Apache there are these settings for timeout:
Timeout 3000
KeepAliveTimeout 1500

Seems it would be enough. Is there any other timeout settings I could set for perl scripts?

Also, I'm using prefork MPM. If I change it for worker MPM could it help someway?

Help please to find the reason of errors.
I'll write any additional details which need to do progress.

Regards,
Maxim
 

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WWW::Facebook::API::Video(3pm)				User Contributed Perl Documentation			    WWW::Facebook::API::Video(3pm)

NAME
WWW::Facebook::API::Video - Facebook Video SYNOPSIS
use WWW::Facebook::API::Video; DESCRIPTION
Methods for accessing video with WWW::Facebook::API SUBROUTINES
/METHODS base Returns the WWW::Facebook::API base object. new Constructor. get_upload_limits( %params ) The video.getUploadLimits method of the Facebook API: $response = $client->video->get_upload_limits; upload( %params ) The video.upload method of the Facebook API: $response = $client->video->upload( title => $title, description => $description, data => $RAW_DATA, filename => $filename, # not in the official API, but might be useful ); N.B.: the default response format for this method is XML per the official Facebook documentation, but this module uses whatever format has been set in WWW::Facebook::API. DIAGNOSTICS
None. CONFIGURATION AND ENVIRONMENT
WWW::Facebook::API::Video requires no configuration files or environment variables. DEPENDENCIES
See WWW::Facebook::API INCOMPATIBILITIES
None reported. BUGS AND LIMITATIONS
No bugs have been reported. Please report any bugs or feature requests to "bug-www-facebook-api@rt.cpan.org", or through the web interface at <http://rt.cpan.org>. AUTHOR
David Romano "<unobe@cpan.org>" LICENSE AND COPYRIGHT
Copyright (c) 2010, David Romano "<unobe@cpan.org>". All rights reserved. This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See perlartistic. DISCLAIMER OF WARRANTY
BECAUSE THIS SOFTWARE IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE SOFTWARE, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE SOFTWARE "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE SOFTWARE IS WITH YOU. SHOULD THE SOFTWARE PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR, OR CORRECTION. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE SOFTWARE AS PERMITTED BY THE ABOVE LICENSE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE SOFTWARE (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE SOFTWARE TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. perl v5.10.1 2010-03-13 WWW::Facebook::API::Video(3pm)
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